Influence of grafting on the glass transition temperature of PS thin films

Marceau Hénot, Alexis Chennevière, Eric Drockenmuller, Kenneth Shull, Liliane Léger, Frédéric Restagno*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We present an investigation of the effect of the interaction between a thin polystyrene film and its supporting substrate on its glass transition temperature (Tg). We modulate this interaction by depositing the film on end-tethered polystyrene grafted layers of controlled molecular parameters. By comparing Tg measurements versus film thickness for films deposited on different grafted layers and films deposited directly on a silicon substrate, we can conclude that there is no important effect of the film-subtrate interaction. Our interpretation of these results is that local orientation and dynamic effects substantial enough to influence Tg cannot readily be obtained by grafting prepolymerized chains to a surface, due to intrinsic limitation of the surface grafting density.

Original languageEnglish (US)
JournalUnknown Journal
StatePublished - Jan 17 2017

ASJC Scopus subject areas

  • General

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